<?php
class SMTP {
public $SMTP_PORT = 25;
public $CRLF = "\r\n";
public $do_debug;
public $do_verp = false;
private $smtp_conn;
private $error;
private $helo_rply;
public function __construct() {
$this->smtp_conn = 0;
$this->error = null;
$this->helo_rply = null;
$this->do_debug = 0;
}
public function Connect($host,$port = 0,$tval = 30) {
$this->error = null;
if($this->connected()) {
$this->error = array("error"=>"Already connected to a server");
return false;
}
if(empty($port)) {
$port = $this->SMTP_PORT;
}
$this->smtp_conn = @fsockopen($host,
$port,
$errno,
$errstr,
$tval);
if(empty($this->smtp_conn)) {
$this->error = array("error"=>"Failed to connect to server",
"errno"=>$errno,
"errstr"=>$errstr);
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": $errstr ($errno)".$this->CRLF .'<br />';
}
return false;
}
if(substr(PHP_OS,0,3) != "WIN")
socket_set_timeout($this->smtp_conn,$tval,0);
$announce = $this->get_lines();
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$announce .$this->CRLF .'<br />';
}
return true;
}
public function StartTLS() {
$this->error = null;# to avoid confusion
if(!$this->connected()) {
$this->error = array("error"=>"Called StartTLS() without being connected");
return false;
}
fputs($this->smtp_conn,"STARTTLS".$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 220) {
$this->error =
array("error"=>"STARTTLS not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
if(!stream_socket_enable_crypto($this->smtp_conn,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
return false;
}
return true;
}
public function Authenticate($username,$password) {
fputs($this->smtp_conn,"AUTH LOGIN".$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($code != 334) {
$this->error =
array("error"=>"AUTH not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
fputs($this->smtp_conn,base64_encode($username) .$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($code != 334) {
$this->error =
array("error"=>"Username not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
fputs($this->smtp_conn,base64_encode($password) .$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($code != 235) {
$this->error =
array("error"=>"Password not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
return true;
}
public function Connected() {
if(!empty($this->smtp_conn)) {
$sock_status = socket_get_status($this->smtp_conn);
if($sock_status["eof"]) {
if($this->do_debug >= 1) {
echo "SMTP -> NOTICE:".$this->CRLF ."EOF caught while checking if connected";
}
$this->Close();
return false;
}
return true;
}
return false;
}
public function Close() {
$this->error = null;
$this->helo_rply = null;
if(!empty($this->smtp_conn)) {
fclose($this->smtp_conn);
$this->smtp_conn = 0;
}
}
public function Data($msg_data) {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called Data() without being connected");
return false;
}
fputs($this->smtp_conn,"DATA".$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 354) {
$this->error =
array("error"=>"DATA command not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
$msg_data = str_replace("\r\n","\n",$msg_data);
$msg_data = str_replace("\r","\n",$msg_data);
$lines = explode("\n",$msg_data);
$field = substr($lines[0],0,strpos($lines[0],":"));
$in_headers = false;
if(!empty($field) &&!strstr($field," ")) {
$in_headers = true;
}
$max_line_length = 998;
while(list(,$line) = @each($lines)) {
$lines_out = null;
if($line == ""&&$in_headers) {
$in_headers = false;
}
while(strlen($line) >$max_line_length) {
$pos = strrpos(substr($line,0,$max_line_length)," ");
if(!$pos) {
$pos = $max_line_length -1;
$lines_out[] = substr($line,0,$pos);
$line = substr($line,$pos);
}else {
$lines_out[] = substr($line,0,$pos);
$line = substr($line,$pos +1);
}
if($in_headers) {
$line = "\t".$line;
}
}
$lines_out[] = $line;
while(list(,$line_out) = @each($lines_out)) {
if(strlen($line_out) >0)
{
if(substr($line_out,0,1) == ".") {
$line_out = ".".$line_out;
}
}
fputs($this->smtp_conn,$line_out .$this->CRLF);
}
}
fputs($this->smtp_conn,$this->CRLF .".".$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 250) {
$this->error =
array("error"=>"DATA not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
return true;
}
public function Hello($host = '') {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called Hello() without being connected");
return false;
}
if(empty($host)) {
$host = "localhost";
}
if(!$this->SendHello("EHLO",$host)) {
if(!$this->SendHello("HELO",$host)) {
return false;
}
}
return true;
}
private function SendHello($hello,$host) {
fputs($this->smtp_conn,$hello ." ".$host .$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER: ".$rply .$this->CRLF .'<br />';
}
if($code != 250) {
$this->error =
array("error"=>$hello ." not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
$this->helo_rply = $rply;
return true;
}
public function Mail($from) {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called Mail() without being connected");
return false;
}
$useVerp = ($this->do_verp ?"XVERP": "");
fputs($this->smtp_conn,"MAIL FROM:<".$from .">".$useVerp .$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 250) {
$this->error =
array("error"=>"MAIL not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
return true;
}
public function Quit($close_on_error = true) {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called Quit() without being connected");
return false;
}
fputs($this->smtp_conn,"quit".$this->CRLF);
$byemsg = $this->get_lines();
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$byemsg .$this->CRLF .'<br />';
}
$rval = true;
$e = null;
$code = substr($byemsg,0,3);
if($code != 221) {
$e = array("error"=>"SMTP server rejected quit command",
"smtp_code"=>$code,
"smtp_rply"=>substr($byemsg,4));
$rval = false;
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$e["error"] .": ".$byemsg .$this->CRLF .'<br />';
}
}
if(empty($e) ||$close_on_error) {
$this->Close();
}
return $rval;
}
public function Recipient($to) {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called Recipient() without being connected");
return false;
}
fputs($this->smtp_conn,"RCPT TO:<".$to .">".$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 250 &&$code != 251) {
$this->error =
array("error"=>"RCPT not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
return true;
}
public function Reset() {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called Reset() without being connected");
return false;
}
fputs($this->smtp_conn,"RSET".$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 250) {
$this->error =
array("error"=>"RSET failed",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
return true;
}
public function SendAndMail($from) {
$this->error = null;
if(!$this->connected()) {
$this->error = array(
"error"=>"Called SendAndMail() without being connected");
return false;
}
fputs($this->smtp_conn,"SAML FROM:".$from .$this->CRLF);
$rply = $this->get_lines();
$code = substr($rply,0,3);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:".$rply .$this->CRLF .'<br />';
}
if($code != 250) {
$this->error =
array("error"=>"SAML not accepted from server",
"smtp_code"=>$code,
"smtp_msg"=>substr($rply,4));
if($this->do_debug >= 1) {
echo "SMTP -> ERROR: ".$this->error["error"] .": ".$rply .$this->CRLF .'<br />';
}
return false;
}
return true;
}
public function Turn() {
$this->error = array("error"=>"This method, TURN, of the SMTP ".
"is not implemented");
if($this->do_debug >= 1) {
echo "SMTP -> NOTICE: ".$this->error["error"] .$this->CRLF .'<br />';
}
return false;
}
public function getError() {
return $this->error;
}
private function get_lines() {
$data = "";
while($str = @fgets($this->smtp_conn,515)) {
if($this->do_debug >= 4) {
echo "SMTP -> get_lines(): \$data was \"$data\"".$this->CRLF .'<br />';
echo "SMTP -> get_lines(): \$str is \"$str\"".$this->CRLF .'<br />';
}
$data .= $str;
if($this->do_debug >= 4) {
echo "SMTP -> get_lines(): \$data is \"$data\"".$this->CRLF .'<br />';
}
if(substr($str,3,1) == " ") {break;}
}
return $data;
}
}
?>